How does this plumbing look?

Not only a good idea, but may be required. How big is your laundry sink ?
I'm fairly certain that the Ontario Electric code requires any receptacle within 1.5m of the sink edge to be GFCI protected.

But it would be a good idea to do it, regardless of the distance.

I'd have to measure but pretty sure the sink is further away, I was thinking more of the washer, in case a hose bursts or something. But guess if that happens, the electrical would be the least of my worries. Water damage everywhere would be. I could put a GFCI for the washer but kinda pointless when the big 240 dryer outlet is there too. What is typically the code for laundry rooms? I'm sure it's common to have both those outlets fairly close to water pipes/faucets.

Did not replace the DWV lines but did replace a bunch of supply copper: